From owner-svn-src-stable-12@freebsd.org Mon Sep 30 17:34:25 2019 Return-Path: Delivered-To: svn-src-stable-12@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D550112D886; Mon, 30 Sep 2019 17:34:25 +0000 (UTC) (envelope-from erj@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46hqJx5Hxwz4Cy8; Mon, 30 Sep 2019 17:34:25 +0000 (UTC) (envelope-from erj@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 9526562DD; Mon, 30 Sep 2019 17:34:25 +0000 (UTC) (envelope-from erj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x8UHYPLM076586; Mon, 30 Sep 2019 17:34:25 GMT (envelope-from erj@FreeBSD.org) Received: (from erj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x8UHYPfb076585; Mon, 30 Sep 2019 17:34:25 GMT (envelope-from erj@FreeBSD.org) Message-Id: <201909301734.x8UHYPfb076585@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: erj set sender to erj@FreeBSD.org using -f From: Eric Joyner Date: Mon, 30 Sep 2019 17:34:25 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r352910 - stable/12/sys/net X-SVN-Group: stable-12 X-SVN-Commit-Author: erj X-SVN-Commit-Paths: stable/12/sys/net X-SVN-Commit-Revision: 352910 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Sep 2019 17:34:25 -0000 Author: erj Date: Mon Sep 30 17:34:25 2019 New Revision: 352910 URL: https://svnweb.freebsd.org/changeset/base/352910 Log: MFC r352655: iflib: Remove redundant VLAN events deregistration This fixes a kernel panic that can occur when unloading an iflib-using driver. Sponsored by: Intel Corporation Modified: stable/12/sys/net/iflib.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/net/iflib.c ============================================================================== --- stable/12/sys/net/iflib.c Mon Sep 30 17:27:59 2019 (r352909) +++ stable/12/sys/net/iflib.c Mon Sep 30 17:34:25 2019 (r352910) @@ -4260,6 +4260,9 @@ iflib_vlan_register(void *arg, if_t ifp, uint16_t vtag if ((vtag == 0) || (vtag > 4095)) return; + if (iflib_in_detach(ctx)) + return; + CTX_LOCK(ctx); IFDI_VLAN_REGISTER(ctx, vtag); /* Re-init to load the changes */ @@ -5024,12 +5027,6 @@ iflib_device_deregister(if_ctx_t ctx) CTX_LOCK(ctx); iflib_stop(ctx); CTX_UNLOCK(ctx); - - /* Unregister VLAN events */ - if (ctx->ifc_vlan_attach_event != NULL) - EVENTHANDLER_DEREGISTER(vlan_config, ctx->ifc_vlan_attach_event); - if (ctx->ifc_vlan_detach_event != NULL) - EVENTHANDLER_DEREGISTER(vlan_unconfig, ctx->ifc_vlan_detach_event); iflib_netmap_detach(ifp); ether_ifdetach(ifp);